Pothead



Aug. 15, 1933. A. s. sTEmMAYER,

POTHEAD Filed Feb. l2. 1930 Patented Augr15, 1933 s t UNITED' STATES aP'A-rN-r 'Y r-CE@ 1,922,336 roTHEAD Alwin G. Steinmayer, Milwaukee, Wis., assigner to Line Material Company, South Milwaukee,

' Wis., a Corporation of Delaware l Application February 12, 1930.. serial No. 427,803`

` solaires; '(c1.-173'353) y This invention relates particularly7 to pot heads tical application of the principles thereof, andrin or cableduct bells of the type illustrated in my. which: y 1 v l Y copending application Serial No. 310,333, filed Figure 1 is a side view of a pot head fora Oct.'4, 1928of which this application is a consingle conductorcable illustrating the applica- 5 tinuation as to-all common 4subject matter, and tion of this invention, and having parts broken 50i; wherein-a hermetic seal-is provided'io'r the end away and in section; and Y of a cable, and through which the conductor or Figure 2 is a perspective view of the clamping conductors of the cable arebrought outwardly to contact sleeve or bushing and its supporting. be connected with the conductor or conductors of washer removed from the pot head-structure.

an aerial system crtne like,` and has as an .object Y Referring now more particularly to the accom- 6a" the-provision Vof novel and' efficient means for panying drawing, the numeral' represents thel facilitating the connection ofthe conductors. casing of apot head or cable duct bell ofany suit- -Heretofore, it has been customary to solder or able design and which in the present instance is sweat'a terminal member to the stripped end of adapted particularly for a single conductor cable f the cable conductor'and to extend the 'same out- 6. The cable 6 is connected with thelowerpor- 70, wardly through the pot head coverto be connect- 'tion of the casing in any conventional manner, ed= with its respective'aerial conductor; This and its core or conductor '7 extends 'upwardly method; has several objections, the foremost of through an outlet bushing 8 preferably formed whiclris'the difliculty with which the terminal of porcelain or othersuitable'insulating material.` A

member isswea'tedfor soldered to the end'of the The upper open endf of i the bushing mounts Wi cable conductor, this lbeing especially true where an exteriorly threaded cap member 9 apertured, thecable conductor is heavy and-stiff., v asat l0, to provide a continuation `of the`bore Withv the above objection in mind, the present 11" in the bushing, and supported by .the cap invention contemplates as another object the' Y member 9 is a `washer `or disc member 12 4which provision of means connectible with the end of forms a support fora clamping bushing or. sleeve 90 meansfor likewise clamping a lead-in or concap member and its bore 15 is slightly larger a cable without necessitating soldering. 13 preferably formed of, lead or' other Vsuitable `Another object of this invention resides in the deformable metal. v*The washer 12 has a central provision of clamping means engageable with the downwardly directed boss 14 which projects into @Xtellddend Of the Cable COlldllCtOly arid haV-llg theY aperture 10 t0 .align the Washer with th 5 ductor wire thereto, to have a good electrical conthan the diameter 'of the bared end of the connection with the cable conductor. ductor '7.

A- further object of this invention resides in Thediameter 0f the bore 16 0f the clamping the provision of a tapered Split sleeve eneaeeable bushing or sleeve is of a diameter to snugly' engage with]v the end- 0f a-Cablc Conductor, and mGanS the bared end of the conductor 'l which' projects 90 Wherebythe Sleeve may be clamped t0 bind the upwardly through the opening in the 'washer end of the conductor. and its external surface is conical in shape soY And a still further objectof this invention rethat `downtyard force applied onto the bushing sides in VreIlflOl/'ably mOllIltiIlg the Clamping meal-1S by a clamp nut 17, whose lower end is threaded 40 whereby the insulate'dcable may be brought out ont@ the gap member 9', Wedges the bushing bg- 90 thlOllgh the pt head4 t0 facilitate tS prepara' tween its tapered bore 18 vand the adjacent portiOIl 'Ol COHDQCtOIl With thf Clamping m2mtion of the conductor to provide a perfect elec- With'the abOVe anbthel" Objets in View WhCh trical engagement between the conductor and Wm appeal'- as me descpton Proceed?" my m 'the clampnut. As is best illustratedlin Figure Y elution resides m the novel Constmtlon 6,0m- 2, aiternateiongitudmn 510155,19 and zorextended bination and arrangement of parts substantially downwardly and upwardlyespctvely, tofth as hereinafter described and more particularly body of the bushing provide spaces t0 permit the gjrh ee contraction of the bushing during the clampingY "0 ment of the herein disclosed invention may be l made as come within the scope of the claims. To' prevent relatlve movement between the In theY accompanying drawing, I have illustratbushing 13 and ltS Sli-I )lJOttmg Washer 12' .dlaedma complete example oi the physical embodi- IllStICallYDpDQSed Dl'OJeCtlODS V21' @Xtelld down,-

. ment of my inventiony constructed according to wardly from the. underusurface of the bushing the best modes I have so far devised for the practo ,be received in grooves or recesses 22* `formed action. Y

Aor other deformable metal.

in the upper surface of the supporting plate in communication with its bore 15.

The upper vend of the clamping nut l'yis` reduced in diameter and exteriorly threaded,`to provide a stud 23 upon which a lateral extension 24 may be clamped by a nut 25. The outer end of the lateral extension has an upwardly directed exteriorly threaded boss 26 provided with a tapered bore 27 to receive a sleeve 28 of lead The sleeve 28 forms a bushing for the adjacent end of an aerial conductor 29 and as the outer cylindrical surface of the sleeve is taperedin bothdirections, tighteningkof a nut 30 threaded on the projection `26 serves to tightly clamp the bushingl onto the conductor and provide a good electrical connectionbetween it and the laterally extended member 24. s

Although the foregoing description and the illustration shows the `invention applied to a single conductor cable, it is understood that the application is the same in instances where the cable is composed of a number of conductors.

From. the foregoing description taken inconnection with the accompanying drawing, it will be'readily apparent to those skilled in the art to which an invention of the character described appertains, that I Vprovide novel means for con-v tire diameter of the insulated cable conductor to,

extend from the pot head bushing. What I claim as my invention is:

l. In a pot head ihaving a tubular outlet member, a cable conductorhaving ak portion withinV the tubular outlet member and a terminal member, means for connecting the terminal member with-the cable conductor comprising, a sleeve engageable withthe cable conductor, readily removablemeans for supporting the sleeve in operative position from the tubular outlet member, means on said support cooperating with meansion said-'sleeve to prevent relative rotation therebetween, meansfor connecting the terminal member with the tubular youtlet member, and means whereby the connection of the terminal member with the tubular outlet `member cooperates with the removable means Yfor supporting the sleeve to wedge the same between the terminal member and the conductor. Y

2. The combination with a pot head having a tubular outlet member, a cable conductor projectable .through the tubular outlet member and a terminal member, of means for connecting the terminal member with the cable conductor comprising a sleeve engageable with a portion of the cable conductor fromv which the insulation has l been stripped, a support for the sleeve, means on said support cooperating with means on said sleeve to prevent relative rotation therebetween, said support having an 'aperture slightly larger than the diameterof the bared portionof the cable conductor and `being removable to permit the extension of an insulated portion of the cable beyond the tubular outlet member, means for drawing the terminal member toward the tubular outlet member, and means whereby movement of theV terminal member toward the tubular outlet member wedges the `sleeve between the terminal member and the cable conductor.

3; In a device of the character described, an apertured outlet member, a cable conductor projectable through the outlet member to facilitate Vbaring of its end, a terminal member, a sleeve engageable with the bared end of the cable conductonmeans for supporting the sleeve from the tubular outlet member, means on said support cooperating with means on said sleeve to prevent relative rotation therebetween, said support means partially closing the aperture through .the outlet member and being removable to permit the projection of the fulldiameterrof the conductor beyond the outlet member, means for connecting the terminal member with the outlet member, and

means whereby the sleeve is impinged between the terminal member and the cable conductor upon engagement of y the' terminalA member with the outlet member. Y

4. In a device of the character described, an apertured outlet member, anV insulated conductor projectable through the outlet member to facilitate baring of its end,a sleeve engageable over the bared portion of the conductor, a supporting member for the sleeve, means on said support cooperating with means onl said sleeve to prevent relative rotation therebetween, said supporting member rpartially closing the aperture through theoutlet member and being removable to permit the extension of the full diameter of the conductor through the outlet member, a clamping nut connectible with the outletmember, and means whereby the connection of the clamping nut with the outlet member wedges the sleeve conductor, a supporting member mounted onr'the cap member and partially .closing its aperture to form a support for the yieldable sleeve adjacent the conductor, means onV said support cooperating with means on said sleeve to prevent relative rotation therebetween, a clamping nut engageable with Vthe cap `member, and means whereby engagement of the clamping nut with the cap member .wedges the yieldable sleeve between Ythe clamping nut and the conductor,

. 6., In combination with a pot head having a tubular bushing, a cable conductor ,extended through the bushing-a cap member carried by. the bushing and having an aperture suiiciently large to receive the full diameter of the cable conductor to permit the same to be'projected beyond the tubular bushing to facilitatebaring its end, a yieldable sleeve engageable with the bared end of the cable conductor, a member supported bythe cap member and forming a support for the Vyieldable sleeve adjacent-the cable conductor, means on said support cooperating with means on said sleeve to prevent relative rotation therebetween, a clamping member having a bore adapted to receive the yieldable sleeve and being threaded onto the cap member, and means whereby the threading of the clamping member onto the cap member Wedges the yieldable sleeve between the clamping member and the cable con-` ductor.

7. In a device of the character described, a tubular member, a cap member carried by the tubular member and having an opening forming substantially a continuation of the bore in the tubular member, a conductor within the tubular member and projectable through the cap member opening to facilitate baring of its end porl tion, a sleeve engageable with the bared end portion of the conductor, a member partially closing the opening through the cap member and supporting the sleeve from the cap member, means on said support cooperating with means on said sleeve to prevent relativeV rotation therebetween and terminal means cooperating with the last mentioned member to Wedge the sleeve between it and the conductor whereby the vconductor is anchored to the tubular member and convenient means are provided for electrically connecting a lead-in conductor with the said conductor.

8. In a device of the character described, a threaded cap having a port therethrough, a disc member'detachably supported on the outer end f of the cap and having a boss projecting into said port and having an opening therethrough to accommodate a cable, a clamping bushing` supported from said disc member outwardly -of'the cap and having a tapered Vconical face, and a nut member having a threaded engagement with the cap and having a tapered conical recess, the walls of vwhich engage said clamping bushing to compress the same between said nut member and said cable to form an electrical connection.

ALWIN G. STEINMAYER.

p 12o Y 

